Re: ftrace behaviour (was: [PATCH] ftrace: introducetracing_reset_online_cpus() helper)

[Steven Rostedt]

On Sat, 20 Dec 2008, Pekka Paalanen wrote:
> 
> I thought this was just about not having to do
> 
> $ echo 0 > tracing_enabled
> $ echo 28764243 > buffer_size
> $ echo 1 > tracing_enabled
> 
> and instead just do
> 
> $ echo 28764243 > buffer_size
> 
> which would do exactly the same, except being easier for the user.
> Personally I've never dreamed of any kind of resize-in-flight.
> 

I must be losing it :-p

You can on tip simply echo 28764243 > buffer_size without disabling the 
tracer.  This change is not in mainline, but I expect it will be in 
2.6.29. 

I just resized the buffer while running the function tracer. I made the 
change a while ago.

-- Steve

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